My Human character has a 10% bonus chance to find magic items. Does that mean that i have 10% increased chance to find phat lewt inside of chests/barrels/animals no matter what character i open it up with?

Example:

Chance to drop "Item X" is 20% Human gets a 10% bonus to Find Magic
Items. Human now has a 22% chance to find Item X

Does the half-giant in my group have 20 or 22 percent chance of
finding the same Item X when i open up a container while controlling him?